FULL SCALE CAPACITY AT 460 VOLTS
The Range Finder Toroid has six motor size choices.
Select one that is equal or larger than your motor. This
will leave some headroom.
• For motors less than 5 HP (460 volt), take extra turns.
• For motors greater than 50 HP, use Range Finder
Current Transformer.
MO TO R
FULL
% FULL
RANGE TURNS
CURRENT
SIZE
SCALE
LOAD
FINDER
TRANS-
CAPACITY
SWITCH
FO RMER
1/ 2 HP
.6 HP
123
2 O N
8
1
1.25
123
2 O N
4
1-1/ 2
1.65
109
2 O N
3
2
2.70
134
2 O N
2
3
3.80
128
3 O N
2
5
5.50
110
2 O N
1
7-1/ 2
8.25
110
3 O N
1
10
11.0
110
4 O N
1
15
27.5
183
5 O N
1
20
27.5
137
5 O N
1
25
27.5
110
5 O N
1
30
55.0
183
6 O N
1
40
55.0
138
6 O N
1
50
55.0
110
6 O N
1
60
84.0
140
1 O N
1
100:5
75
84.0
112
1 O N
1
100:5
100
130
130
1 O N
1
150:5
125
130
104
1 O N
1
150:5
150
173
115
1 O N
1
200:5
200
216
108
1 O N
1
250:5
250
260
104
1 O N
1
300:5
300
346
115
1 O N
1
400:5
MULTIPLIERS
For nominal voltages other than 460 volts,
multiply 460V full scale by:
208V = .45
230V = .5
380V = .83
415V = .9
575V = 1.25
For Kilowatts multiply Full Scale HP x .746
For motor sizes or capacities not in table:
% Full Load = Full Scale Capacity x 100
Your Motor Size
+ -
4-20
MA OUTPUT
REMOTE RESET
REMOTE
RATE
RELAY OUTPUTS —
POWER ON, NOT TRIPPED
MAX
TRIP
RATE
TRIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
M
O
T
OR
RANGE FINDER
TOROID
CURRENT FROM
REMAINING PHASE
VOLTAGE TRANSFORMER
WITH 120V SECONDARY
MAX
FULL SCALE
CAPACITY AT 460 VOLTS
MULTIPLIERS